Adding a video transformation (subtitles) in subdirectories results in a 400 response

Ronald Thompson

October 10, 2022 23:12

Hello,

I'm trying to add a subtitle layer to my video but the URL returns a 400.  My video url without the transformation is: https://res.cloudinary.com/imperfect/video/upload/b_blurred:400:15,c_pad,h_318,w_592/shop-dev/shelf-videos/puppy_test_dy54vj.webm and that works great.

The vtt subtitle file is in the same subdirectory, so I've made this URL: https://res.cloudinary.com/imperfect/video/upload/b_blurred:400:15,c_pad,h_318,w_592/l_subtitles:shop-dev:shelf-videos:puppy_test_rzk5ma.vtt/fl_layer_apply/shop-dev/shelf-videos/puppy_test_dy54vj.webm and that does not work.

Why isn't this working?  Both files are in the shop-dev/shelf-videos/ subdirectory and I believe I followed the public ID rules.

Thank you!

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  Tamara Yulevich

  October 11, 2022 13:26 Edited

  Hi Ronald, 

  In general, in order to help debug Cloudinary URLs, the response would include a header called X-Cld-Error which provides more information on why the request was not successful. If you inspect the X-Cld-Error response header after making a request for the derived video example you'll see the following:

  X-Cld-Error: Video file corrupt
  

  This means there is something wrong with the .vtt file since the video works fine without it. If I change the .vtt file to the file I just uploaded to your account (YouTube.srt) it works: 
  https://res.cloudinary.com/imperfect/video/upload/b_blurred:400:15,c_pad,h_318,w_592/l_subtitles:shop-dev:shelf-videos:YouTube.srt/fl_layer_apply/shop-dev/shelf-videos/puppy_test_dy54vj.webm

  If you wanted to use the vtt file as the subtitle for a <video> tag, you could do it as demonstrated in the following JSFiddle: http://jsfiddle.net/dannyv_cloudinary/yb497so6/

  To overlay the subtitles on the video directly, you'll need to apply a video transformation as described here in our docs.

  Btw, we have an addon available that will automatically generate vtt files for you. More information on that can be found here: https://cloudinary.com/documentation/google_ai_video_transcription_addon

  Best regards, 

  -Tamara

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  Ronald Thompson

  October 11, 2022 16:09

  Thank you Tamara!  This fixed my issue.  Also, great to know about the

  X-Cld-Error

  header.

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